Ryuichi and Kotaro are brothers who lost their parents in an airplane crash. They're taken in by the chairman of Morinomiya Academy, who lost her son and daughter-in-law in the same crash, on one condition: Ryuichi has to babysit the kids at the daycare room in the school! This room was opened to help the school's teachers who had kids to take care of, but it suffers from a lack of staff until Ryuichi becomes the first member of the babysitter club formed to solve that problem.
Orphans Ryuichi and Kotaro are taken in by the chairwoman of Miyanomori Academy, on the condition that Ryuichi become a babysitter in the school's daycare. This daycare turns out …
When Ryuichi accidentally lets the kids trail him into the school halls, he gets a tongue-lashing from elite class student, Inomata Maria. For some reason, she stops by the daycar…
It's Valentine's Day, and elite class hottie Yagi and genius Nezu are getting a lot of attention from the girls. For some reason, Yagi is very interested in joining the babysitter…
Ryuichi is in high school now. He takes the daycare gang around to see the school's clubs, which are recruiting. He also tries to get people to join the babysitter club, but it do…
Second-year Inui visits the daycare room, claiming Midori to be his future child. Is Ms. Sawatari committing adultery?! Later, Kirin, studying hard to be a witch, gets in a fight …
Playing in the garden on his day off, Kotaro discovers a little boy trapped in the fence... who happens to look just like Nezu! Later, Ryuichi leaves his lunch in the daycare room…
Since Inomata hasn't been visiting very often lately, Inomata takes Kotaro out of the daycare room to find her. Convinced that she hates Ryuichi, they try to make a case for him. …
After receiving a love letter, Ryuichi spends the day acting distant, which worries the kids in the daycare room. Later, the Kamitani brothers invite Ryuichi and Kotaro out to a f…
Everyone's going to the beach: the kids, the mothers, the daycare staff, and even Inomata! Kotaro is afraid of the ocean, so Ryuichi tries to accompany him on other activities. La…
It's the day of the culture festival, and all the kids are dressed as veggies for their booth. Since the fathers are coming to visit, Ms. Kumazuka asks a favor of the daycare staf…
Usada is home sick with a cold, so he asks Saikawa to serve as babysitter in his place. Saikawa is good at everything, but can he handle being a babysitter? Later, Ushimaru visits…
On a Sunday, Ryuichi heads out to hang out with his classmates, leaving Kotaro behind for the first time. Kotaro is sad about having to stay home with Saikawa, but things pick up …